President Donald Trump on Wednesday continued his verbal assault on the Federal Reserve, which he blames for slowing the economy, tweeting that the central bank should cut interest rates to zero or even set negative interest rates. The president also called Fed officials “boneheads” in the tweet.

“The Federal Reserve should get our interest rates down to ZERO, or less, and we should then start to refinance our debt. INTEREST COST COULD BE BROUGHT WAY DOWN, while at the same time substantially lengthening the term,” he said.

The president also made a new suggestion not seen in some of his past attacks on the Fed, saying that the country should refinance its debt load. The U.S. has $22.5…